Jump to content
Software FX Community

chartx intermittent issue


Recommended Posts


We have been using chartfx internet server 5.5. Suddenly we are getting some intermittent problems with the display of charts (sometimes it displays sometimes only a red cross appears). Our servers are in a load balanced environment and we have already cross checked the security folder permissions (granted IUSR modify rights to the ChartFX folder), we have verified that the necessary web folder has been created correctly,and reregistered the chartfx dll.

The image we are using is .png and it has already been configured in the chartx configuration: I.E.6 to use .png

Can you help to provide other reasons why this is happening and resolution please?



Link to comment
Share on other sites

There are some intrinsic problems using this older version of Chart FX in a Web Farm:

Chart FX 5.5 generates image file (png, jpeg) into a folder on the server in which it is running and sends this relative URL to the browser (Request1). The browser then comes back and retrieves this file from the server (Request 2). If Request 2 happens to be directed to a different server than Request 1 the file will not be found because it is in another server.

In order to avoid this problem you have several options:

1) Set the load balancing affinity to Session Affinity to ensure Request 2 goes to the same server as Request 1.

2) Use GetHtmlData to avoid temporary files altogether (see docs. for details and here:



3) Point both servers to the same physical temporary file folder (in one server, as a shared folder). You can do this simply by changing the CfxTemp virtual folder in your IIS manager.

More modern versions of Chart FX, such as Chart FX 7, integrate much better to Web Farm environments.



Link to comment
Share on other sites

Hi Frank,

Just a follow up question, may I know what is the chartfx cfxtemp virtual folder for? im asking this because it seems our application is pointing to a different tmp folder where it generates the images..so if that is the case would it be safe i make the tmp folder a virtual folder and do the repointing there?


Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...